Digital Signature in SAP: a pratical review

[paolo_romano2]

Thanks to Uwe Dittes and his excellent handbook at http://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/e0fbaa71-cd8d-2910-5982-e30626035... I was able to test and develop a single signature on a document in a very few minutes.

This is a short list of necessary operations:

Build a table for metadata using as key a field referring to data element SIGN_GUID_22 and the complete key for your to-be-signed document; in my case:

ZZAPT_SIGNATURE

FIELD	DATA ELEMENT
MANDT	MANDT
SIGN_ID	SIGN_GUID_22
CORDERID	N1CORDID

Build a structure for operation log: ZZAPT_SIGNATURE_LOG

FIELD	DATA ELEMENT
.include	SIGN_PROT_STRUC
CORDERID	N1CORDID

Launch the following transactions(very intuitive):

SLG0: declare a sub-object under CDSG1

SIGNA:declare your application

SIGNO:insert the signature object

ELSIG03N: choose and link the type of signature(in my case R/3)

Test Report:

REPORT  ZPR00004                                .    DATA: lo_ds_runtime TYPE REF TO if_ds_runtime.  DATA: lo_sign       TYPE REF TO if_ds_sign.  DATA: l_metadata_wa TYPE ZZAPT_SIGNATURE.   lo_ds_runtime   =   cl_ds_runtime=>get_instance( ).    l_metadata_wa-corderid = '5159DB46ACFC1424E1000000010000AB'."Doc ID     call method lo_ds_runtime->create                 exporting                    im_appl = 'ZTEST'"APPL                    im_object = 'ZTEST'"OBJECT                    im_meta = l_metadata_wa                    im_type = 'C' "Synch signature                 receiving                    result = lo_sign.    call method lo_sign->sign          exporting             im_signer = sy-uname             im_doc_txt = 'SIGNING DOCUMENT 5159DB46ACFC1424E1000000010000AB'             im_doctype = 'TXT'.   commit work and wait.

In this case the reference to the signed documents will be stored into the table  ZZAPTSIGNATURE with the relative signature.

 You can use the method if_ds_sign->get_steps_with_doc to retrieve data of your signed document(the original signer, date and time of the signature process and so on).